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Programming Language Demand Index
Ranked by active job listings across data engineering, backend, AI and web roles. See which languages employers are hiring for right now and how demand is shifting week over week.
Languages tracked
16
Across data, backend, AI and web
Active listings
7,357
Currently indexed across all languages
Top language
Python
1,917 active listings
Data cadence
Weekly
New snapshots from active job postings
All languages — ranked by job demand
Python
The dominant language for data engineering, machine learning and scripting
Active listings
1,917
7-day trend
+205SQL
The universal language of data — querying, transforming and analysing structured data
Active listings
1,333
7-day trend
+147Java
Enterprise backend and data platform language — Spark, Kafka and Flink run on the JVM
Active listings
937
7-day trend
+118TypeScript
Typed superset of JavaScript used across the full stack
Active listings
684
7-day trend
+68JavaScript
The language of the web — frontend, backend and tooling
Active listings
652
7-day trend
+110C++
High-performance systems code — ML inference engines and embedded systems
Active listings
331
7-day trend
+16Kotlin
Modern JVM language used in Android and backend services
Active listings
294
7-day trend
+19Rust
Memory-safe systems programming — increasingly used in data tools like Polars and Delta-rs
Active listings
240
7-day trend
+24C#
.NET ecosystem for enterprise backends and cloud services
Active listings
215
7-day trend
+43Ruby
Expressive backend language — Ruby on Rails and data scripting
Active listings
185
7-day trend
+10Scala
JVM language powering Apache Spark and Kafka Streams
Active listings
181
7-day trend
+17Go
High-performance backend services, CLIs and infrastructure tooling
Active listings
163
7-day trend
+6Swift
Apple platform development — iOS, macOS and server-side Swift
Active listings
95
7-day trend
+5Bash / Shell
Shell scripting for automation, CI/CD pipelines and data workflows
Active listings
83
7-day trend
+17PHP
Server-side web development — powers a large share of the web
Active listings
47
7-day trend
+8R
Statistical computing and data visualisation — dominant in academia and research
Active listings
—
7-day trend
—How rankings are calculated
Active job listings
Each language is matched against skills extracted from real job listings scraped daily. Only currently active listings are counted — expired roles are excluded.
7-day trend
The trend shows the change in active listings over the past seven days — the latest daily snapshot against the one from roughly a week earlier. A positive number means demand grew; negative means it fell.
Explore related intelligence
Based on active job listings across data, backend, AI and web categories · Updated weekly